/*
- * mhfixmsg.c -- rewrite a message with various tranformations
+ * mhfixmsg.c -- rewrite a message with various transformations
*
* This code is Copyright (c) 2002 and 2013, by the authors of nmh.
* See the COPYRIGHT file in the root directory of the nmh
#define MHFIXMSG_SWITCHES \
X("decodetext 8bit|7bit", 0, DECODETEXTSW) \
X("nodecodetext", 0, NDECODETEXTSW) \
+ X("decodetypes", 0, DECODETYPESW) \
+ X("crlflinebreaks", 0, CRLFLINEBREAKSSW) \
+ X("nocrlflinebreaks", 0, NCRLFLINEBREAKSSW) \
X("textcharset", 0, TEXTCHARSETSW) \
X("notextcharset", 0, NTEXTCHARSETSW) \
X("reformat", 0, REFORMATSW) \
X("nofixboundary", 0, NFIXBOUNDARYSW) \
X("fixcte", 0, FIXCTESW) \
X("nofixcte", 0, NFIXCTESW) \
+ X("fixtype mimetype", 0, FIXTYPESW) \
X("file file", 0, FILESW) \
X("outfile file", 0, OUTFILESW) \
X("rmmproc program", 0, RPROCSW) \
extern int skip_mp_cte_check; /* flag to InitMultiPart */
extern int suppress_bogus_mp_content_warning; /* flag to InitMultiPart */
extern int bogus_mp_content; /* flag from InitMultiPart */
+/* flags to/from parse_header_attrs */
+extern int suppress_extraneous_trailing_semicolon_warning;
+extern int extraneous_trailing_semicolon;
/* mhoutsbr.c */
int output_message (CT, char *);
typedef struct fix_transformations {
int fixboundary;
int fixcte;
+ svector_t fixtypes;
int reformat;
int replacetextplain;
int decodetext;
+ char *decodetypes;
+ /* Whether to use CRLF linebreaks, per RFC 2046 Sec. 4.1.1, par.1. */
+ int lf_line_endings;
char *textcharset;
} fix_transformations;
int mhfixmsgsbr (CT *, const fix_transformations *, char *);
static int fix_boundary (CT *, int *);
+static int copy_input_to_output (const char *, const char *);
static int get_multipart_boundary (CT, char **);
static int replace_boundary (CT, char *, char *);
+static int fix_types (CT, svector_t, int *);
+static char *replace_substring (char **, const char *, const char *);
+static char *remove_parameter (char *, const char *);
static int fix_multipart_cte (CT, int *);
static int set_ce (CT, int);
static int ensure_text_plain (CT *, CT, int *, int);
+static int find_textplain_sibling (CT, int, int *);
+static int insert_new_text_plain_part (CT, int, CT);
static CT build_text_plain_part (CT);
+static int insert_into_new_mp_alt (CT *, int *);
static CT divide_part (CT);
static void copy_ctinfo (CI, CI);
static int decode_part (CT);
static int boundary_in_content (FILE **, char *, const char *);
static void transfer_noncontent_headers (CT, CT);
static int set_ct_type (CT, int type, int subtype, int encoding);
-static int decode_text_parts (CT, int, int *);
+static int decode_text_parts (CT, int, const char *, int *);
+static int should_decode(const char *, const char *, const char *);
static int content_encoding (CT, const char **);
static int strip_crs (CT, int *);
static int convert_charsets (CT, char *, int *);
-static int write_content (CT, char *, char *, int, int);
-static int remove_file (char *);
+static int fix_always (CT, int *);
+static int write_content (CT, const char *, char *, int, int);
+static void set_text_ctparams(CT, char *, int);
+static int remove_file (const char *);
static void report (char *, char *, char *, char *, ...);
static void pipeser (int);
int status = OK;
fix_transformations fx;
fx.reformat = fx.fixcte = fx.fixboundary = 1;
+ fx.fixtypes = NULL;
fx.replacetextplain = 0;
fx.decodetext = CE_8BIT;
+ fx.decodetypes = "text,application/ics"; /* Default, per man page. */
+ fx.lf_line_endings = 0;
fx.textcharset = NULL;
if (nmh_init(argv[0], 1)) { return 1; }
case NDECODETEXTSW:
fx.decodetext = 0;
continue;
+ case DECODETYPESW:
+ if (! (cp = *argp++) || *cp == '-')
+ adios (NULL, "missing argument to %s", argp[-2]);
+ fx.decodetypes = cp;
+ continue;
+ case CRLFLINEBREAKSSW:
+ fx.lf_line_endings = 0;
+ continue;
+ case NCRLFLINEBREAKSSW:
+ fx.lf_line_endings = 1;
+ continue;
case TEXTCHARSETSW:
if (! (cp = *argp++) || (*cp == '-' && cp[1]))
adios (NULL, "missing argument to %s", argp[-2]);
case NFIXCTESW:
fx.fixcte = 0;
continue;
+ case FIXTYPESW:
+ if (! (cp = *argp++) || (*cp == '-' && cp[1]))
+ adios (NULL, "missing argument to %s", argp[-2]);
+ if (! strncasecmp (cp, "multipart/", 10) ||
+ ! strncasecmp (cp, "message/", 8)) {
+ adios (NULL, "-fixtype %s not allowed", cp);
+ } else if (! strchr (cp, '/')) {
+ adios (NULL, "-fixtype requires type/subtype");
+ }
+ if (fx.fixtypes == NULL) { fx.fixtypes = svector_create (10); }
+ svector_push_back (fx.fixtypes, cp);
+ continue;
case REFORMATSW:
fx.reformat = 1;
continue;
case NRPRCSW:
rmmproc = NULL;
continue;
- case CHGSW:
- chgflag = 1;
- continue;
- case NCHGSW:
- chgflag = 0;
- continue;
+ case CHGSW:
+ chgflag = 1;
+ continue;
+ case NCHGSW:
+ chgflag = 0;
+ continue;
case VERBSW:
verbosw = 1;
continue;
}
suppress_bogus_mp_content_warning = skip_mp_cte_check = 1;
+ suppress_extraneous_trailing_semicolon_warning = 1;
if (! context_find ("path"))
free (path ("./", TFOLDER));
}
ctp = cts;
- if ((ct = parse_mime (file))) { *ctp++ = ct; }
+ if ((ct = parse_mime (file))) {
+ set_text_ctparams(ct, fx.decodetypes, fx.lf_line_endings);
+ *ctp++ = ct;
+ } else {
+ advise (NULL, "unable to parse message from file %s", file);
+ status = NOTOK;
+
+ /* If there's an outfile, pass the input message unchanged, so the message won't
+ get dropped from a pipeline. */
+ if (outfile) {
+ /* Something went wrong. Output might be expected, such as if this were run
+ as a filter. Just copy the input to the output. */
+ if (copy_input_to_output (file, outfile) != OK) {
+ advise (NULL, "unable to copy message to %s, it might be lost\n", outfile);
+ }
+ }
+ }
} else {
/*
* message(s) are coming from a folder
char *msgnam;
msgnam = m_name (msgnum);
- if ((ct = parse_mime (msgnam))) { *ctp++ = ct; }
+ if ((ct = parse_mime (msgnam))) {
+ set_text_ctparams(ct, fx.decodetypes, fx.lf_line_endings);
+ *ctp++ = ct;
+ } else {
+ advise (NULL, "unable to parse message %s", msgnam);
+ status = NOTOK;
+
+ /* If there's an outfile, pass the input message unchanged, so the message won't
+ get dropped from a pipeline. */
+ if (outfile) {
+ /* Something went wrong. Output might be expected, such as if this were run
+ as a filter. Just copy the input to the output. */
+ const char *input_filename = path (msgnam, TFILE);
+
+ if (copy_input_to_output (input_filename, outfile) != OK) {
+ advise (NULL, "unable to copy message to %s, it might be lost\n", outfile);
+ }
+ }
+ }
}
}
status = 1;
}
+ if (fx.fixtypes != NULL) { svector_free (fx.fixtypes); }
free (outfile);
free (file);
}
reverse_alternative_parts (*ctp);
+ status = fix_always (*ctp, &message_mods);
if (status == OK && fx->fixboundary) {
status = fix_boundary (ctp, &message_mods);
}
+ if (status == OK && fx->fixtypes != NULL) {
+ status = fix_types (*ctp, fx->fixtypes, &message_mods);
+ }
if (status == OK && fx->fixcte) {
status = fix_multipart_cte (*ctp, &message_mods);
}
ensure_text_plain (ctp, NULL, &message_mods, fx->replacetextplain);
}
if (status == OK && fx->decodetext) {
- status = decode_text_parts (*ctp, fx->decodetext, &message_mods);
+ status = decode_text_parts (*ctp, fx->decodetext, fx->decodetypes, &message_mods);
}
if (status == OK && fx->textcharset != NULL) {
status = convert_charsets (*ctp, fx->textcharset, &message_mods);
/* Something went wrong. Output might be expected, such
as if this were run as a filter. Just copy the input
to the output. */
- int in = open (input_filename, O_RDONLY);
- int out = strcmp (outfile, "-")
- ? open (outfile, O_WRONLY | O_CREAT, m_gmprot ())
- : STDOUT_FILENO;
-
- if (in != -1 && out != -1) {
- cpydata (in, out, input_filename, outfile);
- } else {
- status = NOTOK;
+ if (copy_input_to_output (input_filename, outfile) != OK) {
+ advise (NULL, "unable to copy message to %s, it might be lost\n", outfile);
}
-
- close (out);
- close (in);
}
if (modify_inplace) {
}
+/* Copy input message to output. Assumes not modifying in place, so this
+ might be running as part of a pipeline. */
+static int
+copy_input_to_output (const char *input_filename, const char *output_filename) {
+ int in = open (input_filename, O_RDONLY);
+ int out = strcmp (output_filename, "-")
+ ? open (output_filename, O_WRONLY | O_CREAT, m_gmprot ())
+ : STDOUT_FILENO;
+ int status = OK;
+
+ if (in != -1 && out != -1) {
+ cpydata (in, out, input_filename, output_filename);
+ } else {
+ status = NOTOK;
+ }
+
+ close (out);
+ close (in);
+
+ return status;
+}
+
+
static int
fix_boundary (CT *ct, int *message_mods) {
struct multipart *mp;
}
free (part_boundary);
+ } else {
+ /* Couldn't fix the boundary. Report failure so that mhfixmsg
+ doesn't modify the message. */
+ status = NOTOK;
}
+ } else {
+ /* No multipart struct, even though the content type is
+ CT_MULTIPART. Report failure so that mhfixmsg doesn't modify
+ the message. */
+ status = NOTOK;
}
}
}
+static int
+fix_types (CT ct, svector_t fixtypes, int *message_mods) {
+ int status = OK;
+
+ switch (ct->c_type) {
+ case CT_MULTIPART: {
+ struct multipart *m = (struct multipart *) ct->c_ctparams;
+ struct part *part;
+
+ for (part = m->mp_parts; status == OK && part; part = part->mp_next) {
+ status = fix_types (part->mp_part, fixtypes, message_mods);
+ }
+ break;
+ }
+
+ case CT_MESSAGE:
+ if (ct->c_subtype == MESSAGE_EXTERNAL) {
+ struct exbody *e = (struct exbody *) ct->c_ctparams;
+
+ status = fix_types (e->eb_content, fixtypes, message_mods);
+ }
+ break;
+
+ default: {
+ char **typep, *type;
+
+ if (ct->c_ctinfo.ci_type && ct->c_ctinfo.ci_subtype) {
+ for (typep = svector_strs (fixtypes);
+ typep && (type = *typep);
+ ++typep) {
+ char *type_subtype =
+ concat (ct->c_ctinfo.ci_type, "/", ct->c_ctinfo.ci_subtype,
+ NULL);
+
+ if (! strcasecmp (type, type_subtype) &&
+ decode_part (ct) == OK &&
+ ct->c_cefile.ce_file != NULL) {
+ char *ct_type_subtype = mime_type (ct->c_cefile.ce_file);
+ char *cp;
+
+ if ((cp = strchr (ct_type_subtype, ';'))) {
+ /* Truncate to remove any parameter list from
+ mime_type () result. */
+ *cp = '\0';
+ }
+
+ if (strcasecmp (type, ct_type_subtype)) {
+ char *ct_type, *ct_subtype;
+ HF hf;
+
+ /* The Content-Type header does not match the
+ content, so update these struct Content
+ fields to match:
+ * c_type, c_subtype
+ * c_ctinfo.ci_type, c_ctinfo.ci_subtype
+ * c_ctline
+ */
+ /* Extract type and subtype from type/subtype. */
+ ct_type = getcpy (ct_type_subtype);
+ if ((cp = strchr (ct_type, '/'))) {
+ *cp = '\0';
+ ct_subtype = getcpy (++cp);
+ } else {
+ advise (NULL, "missing / in MIME type of %s %s",
+ ct->c_file, ct->c_partno);
+ free (ct_type);
+ return NOTOK;
+ }
+
+ ct->c_type = ct_str_type (ct_type);
+ ct->c_subtype = ct_str_subtype (ct->c_type, ct_subtype);
+
+ free (ct->c_ctinfo.ci_type);
+ ct->c_ctinfo.ci_type = ct_type;
+ free (ct->c_ctinfo.ci_subtype);
+ ct->c_ctinfo.ci_subtype = ct_subtype;
+ if (! replace_substring (&ct->c_ctline, type,
+ ct_type_subtype)) {
+ advise (NULL, "did not find %s in %s",
+ type, ct->c_ctline);
+ }
+
+ /* Update Content-Type header field. */
+ for (hf = ct->c_first_hf; hf; hf = hf->next) {
+ if (! strcasecmp (TYPE_FIELD, hf->name)) {
+ if (replace_substring (&hf->value, type,
+ ct_type_subtype)) {
+ ++*message_mods;
+ if (verbosw) {
+ report (NULL, ct->c_partno, ct->c_file,
+ "change Content-Type in header "
+ "from %s to %s",
+ type, ct_type_subtype);
+ }
+ break;
+ } else {
+ advise (NULL, "did not find %s in %s",
+ type, hf->value);
+ }
+ }
+ }
+ }
+ free (ct_type_subtype);
+ }
+ free (type_subtype);
+ }
+ }
+ }}
+
+ return status;
+}
+
+char *
+replace_substring (char **str, const char *old, const char *new) {
+ char *cp;
+
+ if ((cp = strstr (*str, old))) {
+ char *remainder = cp + strlen (old);
+ char *prefix, *new_str;
+
+ if (cp - *str) {
+ prefix = getcpy (*str);
+ *(prefix + (cp - *str)) = '\0';
+ new_str = concat (prefix, new, remainder, NULL);
+ free (prefix);
+ } else {
+ new_str = concat (new, remainder, NULL);
+ }
+
+ free (*str);
+
+ return *str = new_str;
+ } else {
+ return NULL;
+ }
+}
+
+/*
+ * Remove a name=value parameter, given just its name, from a header value.
+ */
+char *
+remove_parameter (char *str, const char *name) {
+ /* It looks to me, based on the BNF in RFC 2045, than there can't
+ be whitespace betwwen the parameter name and the "=", or
+ between the "=" and the parameter value. */
+ char *param_name = concat (name, "=", NULL);
+ char *cp;
+
+ if ((cp = strstr (str, param_name))) {
+ char *start, *end;
+ size_t count = 1;
+
+ /* Remove any leading spaces, before the parameter name. */
+ for (start = cp;
+ start > str && isspace ((unsigned char) *(start-1));
+ --start) {
+ continue;
+ }
+ /* Remove a leading semicolon. */
+ if (start > str && *(start-1) == ';') { --start; }
+
+ end = cp + strlen (name) + 1;
+ if (*end == '"') {
+ /* Skip past the quoted value, and then the final quote. */
+ for (++end ; *end && *end != '"'; ++end) { continue; }
+ ++end;
+ } else {
+ /* Skip past the value. */
+ for (++end ; *end && ! isspace ((unsigned char) *end); ++end) {}
+ }
+
+ /* Count how many characters need to be moved. Include
+ trailing null, which is accounted for by the
+ initialization of count to 1. */
+ for (cp = end; *cp; ++cp) { ++count; }
+ (void) memmove (start, end, count);
+ }
+
+ free (param_name);
+
+ return str;
+}
+
static int
fix_multipart_cte (CT ct, int *message_mods) {
int status = OK;
switch ((*ct)->c_type) {
case CT_TEXT: {
- int has_text_plain = 0;
-
/* Nothing to do for text/plain. */
if ((*ct)->c_subtype == TEXT_PLAIN) { return OK; }
if (parent && parent->c_type == CT_MULTIPART &&
parent->c_subtype == MULTI_ALTERNATE) {
- struct multipart *mp = (struct multipart *) parent->c_ctparams;
- struct part *part, *prev;
int new_subpart_number = 1;
-
- /* See if there is a sibling text/plain. */
- for (prev = part = mp->mp_parts; part; part = part->mp_next) {
- ++new_subpart_number;
- if (part->mp_part->c_type == CT_TEXT &&
- part->mp_part->c_subtype == TEXT_PLAIN) {
- if (replacetextplain) {
- struct part *old_part;
- if (part == mp->mp_parts) {
- old_part = mp->mp_parts;
- mp->mp_parts = part->mp_next;
- } else {
- old_part = prev->mp_next;
- prev->mp_next = part->mp_next;
- }
- if (verbosw) {
- report (NULL, parent->c_partno, parent->c_file,
- "remove text/plain part %s",
- old_part->mp_part->c_partno);
- }
- free_content (old_part->mp_part);
- free (old_part);
- } else {
- has_text_plain = 1;
- }
- break;
- }
- prev = part;
- }
+ int has_text_plain =
+ find_textplain_sibling (parent, replacetextplain,
+ &new_subpart_number);
if (! has_text_plain) {
/* Parent is a multipart/alternative. Insert a new
text/plain subpart. */
- struct part *new_part = mh_xmalloc (sizeof *new_part);
-
- if ((new_part->mp_part = build_text_plain_part (*ct))) {
- char buffer[16];
- snprintf (buffer, sizeof buffer, "%d", new_subpart_number);
-
- new_part->mp_next = mp->mp_parts;
- mp->mp_parts = new_part;
- new_part->mp_part->c_partno =
- concat (parent->c_partno ? parent->c_partno : "1", ".",
- buffer, NULL);
-
+ const int inserted =
+ insert_new_text_plain_part (*ct, new_subpart_number,
+ parent);
+ if (inserted) {
++*message_mods;
if (verbosw) {
report (NULL, parent->c_partno, parent->c_file,
"insert text/plain part");
}
} else {
- free_content (new_part->mp_part);
- free (new_part);
status = NOTOK;
}
}
- } else {
- /* Slip new text/plain part into a new multipart/alternative. */
- CT tp_part = build_text_plain_part (*ct);
+ } else if (parent && parent->c_type == CT_MULTIPART &&
+ parent->c_subtype == MULTI_RELATED) {
+ char *type_subtype =
+ concat ((*ct)->c_ctinfo.ci_type, "/",
+ (*ct)->c_ctinfo.ci_subtype, NULL);
+ const char *parent_type =
+ get_param (parent->c_ctinfo.ci_first_pm, "type", '?', 1);
+ int new_subpart_number = 1;
+ int has_text_plain = 0;
+
+ /* Have to do string comparison on the subtype because we
+ don't enumerate all of them in c_subtype values.
+ parent_type will be NULL if the multipart/related part
+ doesn't have a type parameter. The type parameter must
+ be specified according to RFC 2387 Sec. 3.1 but not all
+ messages comply. */
+ if (parent_type && strcasecmp (type_subtype, parent_type) == 0) {
+ /* The type of this part matches the root type of the
+ parent multipart/related. Look to see if there's
+ text/plain sibling. */
+ has_text_plain =
+ find_textplain_sibling (parent, replacetextplain,
+ &new_subpart_number);
+ }
- if (tp_part) {
- CT mp_alt = build_multipart_alt (*ct, tp_part, CT_MULTIPART,
- MULTI_ALTERNATE);
- if (mp_alt) {
- struct multipart *mp =
- (struct multipart *) mp_alt->c_ctparams;
+ free (type_subtype);
- if (mp && mp->mp_parts) {
- mp->mp_parts->mp_part = tp_part;
- /* Make the new multipart/alternative the parent. */
- *ct = mp_alt;
+ if (! has_text_plain) {
+ struct multipart *mp = (struct multipart *) parent->c_ctparams;
+ struct part *part;
+ int siblings = 0;
- ++*message_mods;
- if (verbosw) {
- report (NULL, (*ct)->c_partno, (*ct)->c_file,
- "insert text/plain part");
+ for (part = mp->mp_parts; part; part = part->mp_next) {
+ if (*ct != part->mp_part) {
+ ++siblings;
+ }
+ }
+
+ if (siblings) {
+ /* Parent is a multipart/related. Insert a new
+ text/plain subpart in a new multipart/alternative. */
+ if (insert_into_new_mp_alt (ct, message_mods)) {
+ /* Not an error if text/plain couldn't be added. */
+ }
+ } else {
+ /* There are no siblings, so insert a new text/plain
+ subpart, and change the parent type from
+ multipart/related to multipart/alternative. */
+ const int inserted =
+ insert_new_text_plain_part (*ct, new_subpart_number,
+ parent);
+
+ if (inserted) {
+ HF hf;
+
+ parent->c_subtype = MULTI_ALTERNATE;
+ parent->c_ctinfo.ci_subtype = getcpy ("alternative");
+ if (! replace_substring (&parent->c_ctline, "/related",
+ "/alternative")) {
+ advise (NULL,
+ "did not find multipart/related in %s",
+ parent->c_ctline);
+ }
+
+ /* Update Content-Type header field. */
+ for (hf = parent->c_first_hf; hf; hf = hf->next) {
+ if (! strcasecmp (TYPE_FIELD, hf->name)) {
+ if (replace_substring (&hf->value, "/related",
+ "/alternative")) {
+ ++*message_mods;
+ if (verbosw) {
+ report (NULL, parent->c_partno,
+ parent->c_file,
+ "insert text/plain part");
+ }
+
+ /* Remove, e.g., type="text/html" from
+ multipart/alternative. */
+ remove_parameter (hf->value, "type");
+ break;
+ } else {
+ advise (NULL, "did not find multipart/"
+ "related in header %s",
+ hf->value);
+ }
+ }
}
} else {
- free_content (tp_part);
- free_content (mp_alt);
- status = NOTOK;
+ /* Not an error if text/plain couldn't be inserted. */
}
- } else {
- status = NOTOK;
}
- } else {
+ }
+ } else {
+ if (insert_into_new_mp_alt (ct, message_mods)) {
status = NOTOK;
}
}
}
+/* See if there is a sibling text/plain. */
+static int
+find_textplain_sibling (CT parent, int replacetextplain,
+ int *new_subpart_number) {
+ struct multipart *mp = (struct multipart *) parent->c_ctparams;
+ struct part *part, *prev;
+ int has_text_plain = 0;
+
+ for (prev = part = mp->mp_parts; part; part = part->mp_next) {
+ ++*new_subpart_number;
+ if (part->mp_part->c_type == CT_TEXT &&
+ part->mp_part->c_subtype == TEXT_PLAIN) {
+ if (replacetextplain) {
+ struct part *old_part;
+ if (part == mp->mp_parts) {
+ old_part = mp->mp_parts;
+ mp->mp_parts = part->mp_next;
+ } else {
+ old_part = prev->mp_next;
+ prev->mp_next = part->mp_next;
+ }
+ if (verbosw) {
+ report (NULL, parent->c_partno, parent->c_file,
+ "remove text/plain part %s",
+ old_part->mp_part->c_partno);
+ }
+ free_content (old_part->mp_part);
+ free (old_part);
+ } else {
+ has_text_plain = 1;
+ }
+ break;
+ }
+ prev = part;
+ }
+
+ return has_text_plain;
+}
+
+
+static int
+insert_new_text_plain_part (CT ct, int new_subpart_number, CT parent) {
+ struct multipart *mp = (struct multipart *) parent->c_ctparams;
+ struct part *new_part = mh_xmalloc (sizeof *new_part);
+
+ if ((new_part->mp_part = build_text_plain_part (ct))) {
+ char buffer[16];
+ snprintf (buffer, sizeof buffer, "%d", new_subpart_number);
+
+ new_part->mp_next = mp->mp_parts;
+ mp->mp_parts = new_part;
+ new_part->mp_part->c_partno =
+ concat (parent->c_partno ? parent->c_partno : "1", ".",
+ buffer, NULL);
+
+ return 1;
+ } else {
+ free_content (new_part->mp_part);
+ free (new_part);
+
+ return 0;
+ }
+}
+
+
static CT
build_text_plain_part (CT encoded_part) {
CT tp_part = divide_part (encoded_part);
if ((tempfile = m_mktemp2 (NULL, invo_name, NULL, NULL)) == NULL) {
advise (NULL, "unable to create temporary file in %s",
get_temp_dir());
- }
- tmp_plain_file = add (tempfile, NULL);
- if (reformat_part (tp_part, tmp_plain_file,
- tp_part->c_ctinfo.ci_type,
- tp_part->c_ctinfo.ci_subtype,
- tp_part->c_type) == OK) {
- return tp_part;
+ } else {
+ tmp_plain_file = add (tempfile, NULL);
+ if (reformat_part (tp_part, tmp_plain_file,
+ tp_part->c_ctinfo.ci_type,
+ tp_part->c_ctinfo.ci_subtype,
+ tp_part->c_type) == OK) {
+ return tp_part;
+ }
}
}
}
+/* Slip new text/plain part into a new multipart/alternative. */
+static int
+insert_into_new_mp_alt (CT *ct, int *message_mods) {
+ CT tp_part = build_text_plain_part (*ct);
+ int status = OK;
+
+ if (tp_part) {
+ CT mp_alt = build_multipart_alt (*ct, tp_part, CT_MULTIPART,
+ MULTI_ALTERNATE);
+ if (mp_alt) {
+ struct multipart *mp = (struct multipart *) mp_alt->c_ctparams;
+
+ if (mp && mp->mp_parts) {
+ mp->mp_parts->mp_part = tp_part;
+ /* Make the new multipart/alternative the parent. */
+ *ct = mp_alt;
+
+ ++*message_mods;
+ if (verbosw) {
+ report (NULL, (*ct)->c_partno, (*ct)->c_file,
+ "insert text/plain part");
+ }
+ } else {
+ free_content (tp_part);
+ free_content (mp_alt);
+ status = NOTOK;
+ }
+ } else {
+ status = NOTOK;
+ }
+ } else {
+ /* Not an error if text/plain couldn't be built. */
+ }
+
+ return status;
+}
+
static CT
divide_part (CT ct) {
CT new_part;
}
add_param(&ct->c_ctinfo.ci_first_pm, &ct->c_ctinfo.ci_last_pm,
- "boundary", boundary, 0);
+ "boundary", boundary, 0);
p = (struct part *) mh_xmalloc (sizeof *p);
p->mp_next = (struct part *) mh_xmalloc (sizeof *p->mp_next);
static int
-decode_text_parts (CT ct, int encoding, int *message_mods) {
+decode_text_parts (CT ct, int encoding, const char *decodetypes, int *message_mods) {
int status = OK;
+ int lf_line_endings = 0;
switch (ct->c_type) {
- case CT_TEXT:
+ case CT_MULTIPART: {
+ struct multipart *m = (struct multipart *) ct->c_ctparams;
+ struct part *part;
+
+ /* Should check to see if the body for this part is encoded?
+ For now, it gets passed along as-is by InitMultiPart(). */
+ for (part = m->mp_parts; status == OK && part; part = part->mp_next) {
+ status = decode_text_parts (part->mp_part, encoding, decodetypes, message_mods);
+ }
+ break;
+ }
+
+ case CT_MESSAGE:
+ if (ct->c_subtype == MESSAGE_EXTERNAL) {
+ struct exbody *e = (struct exbody *) ct->c_ctparams;
+
+ status = decode_text_parts (e->eb_content, encoding, decodetypes, message_mods);
+ }
+ break;
+
+ default:
+ if (! should_decode(decodetypes, ct->c_ctinfo.ci_type, ct->c_ctinfo.ci_subtype)) {
+ break;
+ }
+
+ lf_line_endings =
+ ct->c_ctparams && ((struct text *) ct->c_ctparams)->lf_line_endings;
+
switch (ct->c_encoding) {
case CE_BASE64:
case CE_QUOTED: {
report (NULL, ct->c_partno, ct->c_file, "decode%s",
ct->c_ctline ? ct->c_ctline : "");
}
- strip_crs (ct, message_mods);
+ if (lf_line_endings) {
+ strip_crs (ct, message_mods);
+ }
} else {
status = NOTOK;
}
}
case CE_8BIT:
case CE_7BIT:
- strip_crs (ct, message_mods);
+ if (lf_line_endings) {
+ strip_crs (ct, message_mods);
+ }
break;
default:
break;
}
break;
-
- case CT_MULTIPART: {
- struct multipart *m = (struct multipart *) ct->c_ctparams;
- struct part *part;
-
- /* Should check to see if the body for this part is encoded?
- For now, it gets passed along as-is by InitMultiPart(). */
- for (part = m->mp_parts; status == OK && part; part = part->mp_next) {
- status = decode_text_parts (part->mp_part, encoding, message_mods);
- }
- break;
}
- case CT_MESSAGE:
- if (ct->c_subtype == MESSAGE_EXTERNAL) {
- struct exbody *e = (struct exbody *) ct->c_ctparams;
+ return status;
+}
- status = decode_text_parts (e->eb_content, encoding, message_mods);
- }
- break;
- default:
- break;
+/* Determine if the part with type[/subtype] should be decoded, according to
+ decodetypes (which came from the -decodetypes switch). */
+static int
+should_decode(const char *decodetypes, const char *type, const char *subtype) {
+ /* Quick search for matching type[/subtype] in decodetypes: bracket
+ decodetypes with commas, then search for ,type, and ,type/subtype, in
+ it. */
+
+ int found_match = 0;
+ char *delimited_decodetypes = concat(",", decodetypes, ",", NULL);
+ char *delimited_type = concat(",", type, ",", NULL);
+
+ if (nmh_strcasestr(delimited_decodetypes, delimited_type)) {
+ found_match = 1;
+ } else if (subtype != NULL) {
+ char *delimited_type_subtype =
+ concat(",", type, "/", subtype, ",", NULL);
+
+ if (nmh_strcasestr(delimited_decodetypes, delimited_type_subtype)) {
+ found_match = 1;
+ }
+ free(delimited_type_subtype);
}
- return status;
+ free(delimited_type);
+ free(delimited_decodetypes);
+
+ return found_match;
}
}
+/*
+ * Fix various problems that aren't handled elsewhere. These
+ * are fixed unconditionally: there are no switches to disable
+ * them. (Currently, "problems" is just one: an extraneous
+ * semicolon at the end of a header parameter list.)
+ */
+static int
+fix_always (CT ct, int *message_mods) {
+ int status = OK;
+
+ switch (ct->c_type) {
+ case CT_MULTIPART: {
+ struct multipart *m = (struct multipart *) ct->c_ctparams;
+ struct part *part;
+
+ for (part = m->mp_parts; status == OK && part; part = part->mp_next) {
+ status = fix_always (part->mp_part, message_mods);
+ }
+ break;
+ }
+
+ case CT_MESSAGE:
+ if (ct->c_subtype == MESSAGE_EXTERNAL) {
+ struct exbody *e = (struct exbody *) ct->c_ctparams;
+
+ status = fix_always (e->eb_content, message_mods);
+ }
+ break;
+
+ default: {
+ HF hf;
+
+ for (hf = ct->c_first_hf; hf; hf = hf->next) {
+ size_t len = strlen (hf->value);
+
+ if (strcasecmp (hf->name, TYPE_FIELD) != 0 &&
+ strcasecmp (hf->name, DISPO_FIELD) != 0) {
+ /* Only do this for Content-Type and
+ Content-Disposition fields because those are the
+ only headers that parse_mime() warns about. */
+ continue;
+ }
+
+ /* whitespace following a trailing ';' will be nuked as well */
+ if (hf->value[len - 1] == '\n') {
+ while (isspace((unsigned char)(hf->value[len - 2]))) {
+ if (len-- == 0) { break; }
+ }
+ }
+
+ if (hf->value[len - 2] == ';') {
+ /* Remove trailing ';' from parameter value. */
+ hf->value[len - 2] = '\n';
+ hf->value[len - 1] = '\0';
+
+ /* Also, if Content-Type parameter, remove trailing ';'
+ from ct->c_ctline. This probably isn't necessary
+ but can't hurt. */
+ if (strcasecmp(hf->name, TYPE_FIELD) == 0 && ct->c_ctline) {
+ size_t l = strlen(ct->c_ctline) - 1;
+ while (isspace((unsigned char)(ct->c_ctline[l])) ||
+ ct->c_ctline[l] == ';') {
+ ct->c_ctline[l--] = '\0';
+ if (l == 0) { break; }
+ }
+ }
+
+ ++*message_mods;
+ if (verbosw) {
+ report (NULL, ct->c_partno, ct->c_file,
+ "remove trailing ; from %s parameter value",
+ hf->name);
+ }
+ }
+ }
+ }}
+
+ return status;
+}
+
+
static int
-write_content (CT ct, char *input_filename, char *outfile, int modify_inplace,
+write_content (CT ct, const char *input_filename, char *outfile, int modify_inplace,
int message_mods) {
int status = OK;
}
+/*
+ * parse_mime() does not set lf_line_endings in struct text, so use this function to do it.
+ * It touches the parts the decodetypes identifies.
+ */
+static void
+set_text_ctparams(CT ct, char *decodetypes, int lf_line_endings) {
+ switch (ct->c_type) {
+ case CT_MULTIPART: {
+ struct multipart *m = (struct multipart *) ct->c_ctparams;
+ struct part *part;
+
+ for (part = m->mp_parts; part; part = part->mp_next) {
+ set_text_ctparams(part->mp_part, decodetypes, lf_line_endings);
+ }
+ break;
+ }
+
+ case CT_MESSAGE:
+ if (ct->c_subtype == MESSAGE_EXTERNAL) {
+ struct exbody *e = (struct exbody *) ct->c_ctparams;
+
+ set_text_ctparams(e->eb_content, decodetypes, lf_line_endings);
+ }
+ break;
+
+ default:
+ if (should_decode(decodetypes, ct->c_ctinfo.ci_type, ct->c_ctinfo.ci_subtype)) {
+ if (ct->c_ctparams == NULL) {
+ if ((ct->c_ctparams = (struct text *) mh_xcalloc (1, sizeof (struct text))) == NULL) {
+ adios (NULL, "out of memory");
+ }
+ }
+ ((struct text *) ct->c_ctparams)->lf_line_endings = lf_line_endings;
+ }
+ }
+}
+
+
/*
* If "rmmproc" is defined, call that to remove the file. Otherwise,
* use the standard MH backup file.
*/
static int
-remove_file (char *file) {
+remove_file (const char *file) {
if (rmmproc) {
char *rmm_command = concat (rmmproc, " ", file, NULL);
int status = system (rmm_command);
projects / nmh / blobdiff